Wheeled lifting scraper



N A L H m M K W mmmm WHEELED LIFTING SGRAPER 2 Sheets-Sheet 1 Filed Dec. 2'7, 1926 INVENTOR. WA MM' ZZQM,

N A L u M M K w WHEELED LIFTING SCRAPER Filed Dec 27, 1926 2 Sheets-Sheet INVENTOR. MA.

dwell t t mmmmmmnmmmuimmmmn "rnncren nuwrmrnnr conrnnn, or unnrlnnn, cnnrrunnnt, n eon 'wnnnnnn nrrurnu uunnnnn hpplicntlnn nut Ileecmher er, en. tlertal in. tuner.

inventionrelates to n machine tor elin, pretend as in prepnring ground for i L tion or in handling rend work where the surilace oil the ground-at the edge ot e t must he leveled or tor preparin rendnnys tor the reception oi the top sur ace Allin nhject elf the invention is to provide rnenns wherehy the .scrnper used they loe red lowered will and n quantity ot Another ohiect oil the inrention'is to pro- I rneans wherehy power may he ninde use o tn lower the scrupen ther chi-cots nitthe invention will henp- {1- rent description proceeds.

M ernhndirnent nit the'inverdion is shown in the ncconipnnying drawings in which the serne reference numeral is applied to the seine portion throughout the several figures 4 and oil which there rnuy he l igure 11s at side elevntion oi the scraperwith the scraper shown in its formal operntini position,

lllgure 2 is n sectionel View of the who used on the power cylinder to raise or lower the scraper, V

Figure 3 is a plan view of the complete scraper with the wheels end scraper shown in suhstantially the same position as is shown in lligure 1,

The scrnper' proper consists of a heavy sheet of steel indicated at 1 which sheet of steel has the two side pletes 2 and 3,, which plates are in turn connected to two heavy chennel hare d and 5 which are hrought together et the front to term a single drew her it.

in order to give the drew her frame and screper greater rigidity there is a heavy channel her I? with its ends turned hack esindicnted at 8 and 9 connected to the inside ot the two members 2 and 3. Flat bars 10 and 11 are connected from the front end of the drew her to the center of the cross-bar 7 hy means ot the outwardly turned ends 12 and 18 to give the trance greater strength. Pletes 11 end 15 are supported on the plates 10 end 11 to carry the power cylinder 16, said cylinder hnving two trunnions 17 and 18 journnled in the two braces 14 and 15.

The power cylinder has the detachable heuds 18 and 19 and on its upper side it has i theither pgnthened up or sprend es rnny.

n housing" 211 within which a two-way valve 21 is. niovnhle The valve '21 hes the opernting nrrn 2% end this nrni isin turn connected to n linlrhl which has a handle 2t nt its trout end enten-dinp; into a convenient place tor theworlrnnen driving the tractor to opernte it.

the hnndle nod es is supported loy a stand-- nrddti in n suhstnntielly titted position tor the worlrnian to operete. Pipes 26 27 adord menus to distribute the tluid z-Enorn the valve to opposite ends ot the cylinder and the pipes 2th E29, serve to permit the tluid to be pumped lrorn the trnctor tothe scrnper cyl indent" direction oil movement of the piston red till heinp: vnried nccordnnce with the eirtion ot the operntinn handle 22.

ldecured on the heel; ot the scraper 1 are tour loones 32., 33, 2% end which horns provide journal hen-rings tor two pins 36, 3?. The pins 36 end 31" provide pivot points "for the plates 38 to l1 inclusive, which pint-es are in turn supported hy the shults 12 end 13 torrninp the axle oi. the two rollers 4A and 4-5. The tour plates 38 to 11 inclusive, ure connected'togethcr at their top by means of two heavy channel bars 46 and d! and at their center these channel here are in turn connected together hy two angle trainee 48 and fit) to which the reer end of the piston rod is connected as indicated at 50. A suitable paclring hon 51 prevents the leekuge of liquids from the piston 16 whenever the pressure of the liquid used therein is applied on that end of the cylinder 16 the operation of the screper is as follows: Assuming it to be connected ut the draw bar 6 with any drew her ot the ordinary tructor the handle 24. is within reach of the operator of the tractor who stands on epluttorm carried thereby. lhe tlelrihle pipes 28 and 29 are connected respectively with a suitahle pump end with the pump ply, hut which pump terms no part 01: the present invention. When the workman on the tractor desires to cause the scraper 1 to dig deeper into the ground he will push the handle 28 in such a direction that the pump will deliver water or other fluid through the pipe 26 into the rear end of the cylinder 16, this will pull the cylinder closer to the trames-48 and 49 and will cause the front end of the frames to ush downwardly upon the two pins and 3?, thereby causing the scraper to dig deeper into the ground.

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If the reverse action takes place the handle 23 will be shifted so that the pump will deliver the fluid through the pipe 28 to the gear end of the cylinder 16, that is against the head 19 and the result will be that the cylinder will be separated in distance from the-frame members 4:8 and 49 and thereb the pins 36 and 37 will have pressure app ied to them from the bottom tending to lift the scraper 1 off the ground. It will thus be seen that this construction provides an extremely flexible scraper with all capabilities of being forced into the ground or lifted off the ground that are ordinarily present for a four wheel scraper which is entirely. supported by the frame or operated by aseries of adjustments with 'the front and rear of the four wheel supported frame.

Another advantage of this construction is that it enables the scraper to be coupled to the tractor by merely placing'a pin through the draw bar at 6.

The plates 14 and 15 are braced against the.

top of the surface board 1 by means of two heavy bars 14' and 15.

Having thus described my invention, what I desire to secure by Letters Patent of the United States is as follows, but modifications may be made in carrying out the invention as shown in the drawing and in the above particularly described form thereof, within the purview of'the annexed claims.

1. A scraper of the class described comprising a scraper, a draw-bar for connecting it to a tractor, a truck pivotally connected to said scraper, a cylinder pivotally mounted on said scraper, said cylinder having a piston, and piston rod, a bracket on said truck to which said piston is connected whereby when power is applied to saidc linder the lower edge of said scraper may )e raised or lowered depending onto which end of the cylinder the power is applied.

2. A scraper of the class described com arising a scraper adapted to be drawn fiy a tractor, a truck frame, its forward end pivoted for vertical radial movement to the back of said scraper, and reversible power means mounted on said scraper andconnecting said scraper and said truck for tilting up or down the forward end of the truck frame and the back portion of the scraper.

In testimony whereof I have hereunto set my handthis 2d day of December, A. l). 1925.

WESLEY KENNETH MCMILLAN. 

